Abstract: Concentrated detergent powder compositions having a bulk density of above 600 g/l, preferably at least 610 g/l, more preferably from 650 g/l to 1200 g/l, and comprising a surfactant, a detergency builder, enzymes, a peroxygen compound bleach, and a manganese complex as effective bleach catalyst are disclosed.Specifically preferred manganese complexes are:1) [Mn.sup.IV.sub.2 (.mu.--O).sub.3 (Me--TACN).sub.2 ](PF.sub.6).sub.2 and2) [Mn.sup.IV.sub.2(.mu.--O).sub.3 (MeMe--TACN).sub.2 ](PF.sub.6).sub.2Use of these catalysts can make the detergent powder more compact, i.e. reduce the pack volume, without loss of performance or even with a much better bleaching and washing powder.